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Nature of Operations
6 Months Ended
Jun. 30, 2019
Nature of Operations [Abstract]  
Nature of Operations
1.
NATURE OF OPERATIONS
Nature of Operations—Sterling Construction Company, Inc. (“Sterling” or “the Company”), a Delaware corporation, is a construction company that specializes in heavy civil infrastructure construction and infrastructure rehabilitation as well as residential construction projects. We operate primarily in Arizona, California, Colorado, Hawaii, Nevada, Texas and Utah, as well as other states in which there are feasible construction opportunities. Heavy civil construction projects include highways, roads, bridges, airfields, ports, light rail, water, wastewater and storm drainage systems, foundations for multi-family homes, commercial concrete projects and parking structures. Residential construction projects include concrete foundations for single-family homes.